templates: switch to issue forms

Replace the legacy issue template with separate issue forms for bug
reports and feature requests.  Also add an "ask a question" contact
link that points to openslide-users, and disallow creating issues from
a blank template to encourage use of the correct reporting channel.

Signed-off-by: Benjamin Gilbert <[email protected]>

Author: bgilbert

.github/ISSUE_TEMPLATE.md

@@ -0,0 +1,46 @@
+name: Bug report
+description: Report an bug in OpenSlide Python
+labels: ["defect"]
+body:
+  - type: input
+    id: os
+    attributes:
+      label: Operating system
+      placeholder: e.g. Fedora 37, macOS 12, Windows 11
+    validations:
+      required: true
+  - type: input
+    id: platform
+    attributes:
+      label: Platform
+      placeholder: e.g. 64-bit x86, 32-bit ARM
+    validations:
+      required: true
+  - type: input
+    id: version
+    attributes:
+      label: OpenSlide Python version
+      description: "`openslide.__version__`"
+    validations:
+      required: true
+  - type: input
+    id: openslide-version
+    attributes:
+      label: OpenSlide version
+      description: "`openslide.__library_version__`"
+    validations:
+      required: true
+  - type: input
+    id: format
+    attributes:
+      label: Slide format
+      placeholder: e.g. SVS, NDPI, MRXS
+    validations:
+      required: true
+  - type: textarea
+    id: details
+    attributes:
+      label: Issue details
+      placeholder: Describe your issue
+    validations:
+      required: true

.github/ISSUE_TEMPLATE/bug.yml

@@ -0,0 +1,5 @@
+blank_issues_enabled: false
+contact_links:
+  - name: Ask a question
+    url: https://lists.andrew.cmu.edu/mailman/listinfo/openslide-users/
+    about: Ask support questions on the openslide-users mailing list

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,14 @@
+name: Feature request
+description: Request an enhancement to OpenSlide Python
+labels: ["enhancement"]
+body:
+  - type: input
+    id: format
+    attributes:
+      label: Slide format
+      placeholder: e.g. SVS, NDPI, MRXS
+  - type: textarea
+    id: details
+    attributes:
+      label: Issue details
+      placeholder: Describe your issue